IP Library Granted Patent US 12,428,394
Granted Patent B2
US 12,428,394 · App. 17/623,176 · Granted Sep 30, 2025

2,4-disubstituted pyrimidine derivative, preparation method therefor and use thereof

Inventor: Lijuan Chen (Sichuan, CN)
Assignee: Chengdu Zenitar Biomedical Technology Co., Ltd.
C07D401/14A61P35/00C07D403/04C07D405/14C07D471/10
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Quick Facts
Patent No.
US 12,428,394
App. No.
17/623,176
Granted
Sep 30, 2025
Kind
B2
Abstract

The present invention belongs to the field of chemical medicines, and particularly relates to a 2,4-disubstituted pyrimidine derivative, a preparation method therefor and a use thereof. The present invention provides a 2,4-disubstituted pyrimidine derivative, the structural formula of which is as shown in formula I. The present invention also provides a preparation method for the 2,4-disubstituted pyrimidine derivative and a use thereof. The 2,4-disubstituted pyrimidine derivative provided by the present invention can be used as a kinase inhibitor with double functional targets of JAK2 and FLT3, or a kinase inhibitor with independent functional targets of JAK2 or FLT3, thus providing a new choice for preparing a multi-target inhibitor.

Claims (80)

1. A 2,4-disubstituted pyrimidine derivative, the structural formula of which is as shown in Formula I:

Formula I

wherein, Q is CH; Z 2 and Z 3 are, independently of one another N; Z 1 is C-R 8 ; and Z 4 is C-R 8 or

R 6 is C 1 -C 10 alkyl or C 3 -C 10 cycloalkyl;

R 8 , R 9 are, independently of one another, —H or C 1 -C 10 alkyl;

R 1 , R 2 and R 5 are, independently of one another, —H, halogen or C 1 -C 10 alkyl;

R 3 is

n=0-4 and p=0-4;

R 4 is —H, halogen or C 1 -C 10 alkoxy;

R 11 is

or hydroxyl-substituted C 1 -C 10 alkyl; q=0-4;

R 12 is —H, C 1 -C 10 alkoxy or hydroxyl-substituted C 1 -C 10 alkyl;

R 15 and R 16 are, independently of one another, —H, substituted or unsubstituted C 1 -C 10 alkyl or

and a substituent of the substituted C 1 -C 10 alkyl is —OH, C 1 -C 10 alkoxy, C 3 -C 10 cycloalkyl,

R 18 is —OH; and b=0-6; and

R 19 is C 1 -C 10 alkyl.

2. The 2,4-disubstituted pyrimidine derivative according to claim 1 , wherein R 6 is C 1 -C 8 alkyl or C 3 -C 8 cycloalkyl.

3. The 2,4-disubstituted pyrimidine derivative according to claim 1 , wherein R 8 and R 9 are, independently of one another, —H or C 1 -C 8 alkyl.

4. The 2,4-disubstituted pyrimidine derivative according to claim 1 , wherein R 1 , R 2 and R 5 are, independently of one another, —H, halogen or C 1 -C 8 alkyl.

5. The 2,4-disubstituted pyrimidine derivative according to claim 1 , wherein:

R 3 is

R 4 is —H, halogen or C 1 -C 8 alkoxy;

n=0-3; and

p=0-3.

6. The 2,4-disubstituted pyrimidine derivative according to claim 5 , wherein the

is

7. The 2,4-disubstituted pyrimidine derivative according to claim 1 , wherein:

R 11 is

or hydroxyl-substituted C 1 -C 8 alkyl; and q=0-3; and

R 12 is —H, C 1 -C 8 alkyl or hydroxyl-substituted C 1 -C 8 alkyl.

8. The 2,4-disubstituted pyrimidine derivative according to claim 1 , wherein:

R 15 and R 16 are, independently of one another, —H, substituted or unsubstituted C 1 -C 8 alkyl or

a substituent of the substituted C 1 -C 8 alkyl is —OH, C 1 -C 8 alkoxy, C 3 -C 8 cycloalkyl,

R 18 is —OH; R 19 is C 1 -C 8 alkyl; and b=0-5.

9. The 2,4-disubstituted pyrimidine derivative according to claim 1 , the structural formula of which is as shown in Formula II:

wherein, R 1 , R 2 and R 5 are, independently of one another, —H, halogen or C 1 -C 10 alkyl;

R 3 is

R 4 is —H, halogen or C 1 -C 10 alkoxy; n=0-4; and p=0-4;

R 11 is

or hydroxyl-substituted C 1 -C 10 alkyl; and q=0-4;

R 12 is —H, C 1 -C 10 alkyl or hydroxyl-substituted C 1 -C 10 alkyl;

R 15 and R 16 are, independently of one another, —H, substituted or unsubstituted C 1 -C 10 alkyl or

and a substituent of the substituted C 1 -C 10 alkyl is —OH, C 1 -C 10 alkoxy, C 3 -C 10 cycloalkyl,

R 18 is —OH; and b=0-6; and

R 19 is C 1 -C 10 alkyl.

10. The 2,4-disubstituted pyrimidine derivative according to claim 9 , wherein R 1 , R 2 and R 5 are, independently of one another, —H, halogen or C 1 -C 8 alkyl.

11. The 2,4-disubstituted pyrimidine derivative according to claim 9 , wherein:

R 3 is

R 4 is —H, halogen or C 1 -C 8 alkoxy; n=0-3; and p=0-3.

12. The 2,4-disubstituted pyrimidine derivative according to claim 11 , wherein the

is

13. The 2,4-disubstituted pyrimidine derivative according to claim 9 , wherein:

R 11 is

or hydroxyl-substituted C 1 -C 8 alkyl; and q=0-3; and

R 12 is —H, C 1 -C 8 alkyl or hydroxyl-substituted C 1 -C 8 alkyl.

14. The 2,4-disubstituted pyrimidine derivative according to claim 9 , wherein:

R 15 and R 16 are, independently of one another, —H, substituted or unsubstituted C 1 -C 8 alkyl or

a substituent of the substituted C 1 -C 8 alkyl is —OH, C 1 -C 8 alkoxy, C 3 -C 8 cycloalkyl,

R 18 is —OH; R 19 is C 1 -C 8 alkyl; and b=0-5.

15. The 2,4-disubstituted pyrimidine derivative according to claim 9 , the structural formula of which is as shown in Formula IV:

wherein, R 1 is halogen or C 1 -C 4 alkyl; and R 4 is —H, halogen or C 1 -C 4 alkoxy; and

R 15 and R 16 are, independently of one another, —H, substituted or unsubstituted C 1 -C 10 alkyl

or

a substituent of the substituted C 1 -C 10 alkyl is —OH, C 1 -C 10 alkoxy, C 3 -C 10 cycloalkyl,

R 18 is —OH; b=0-6; and R 19 is C 1 -C 10 alkyl.

16. The 2,4-disubstituted pyrimidine derivative according to claim 15 , wherein R 1 is —F, or methoxyl; and R 4 is —H, —F or methoxyl.

17. The 2,4-disubstituted pyrimidine derivative according to claim 15 , wherein R 15 and R 16 are, independently of one another, —H, substituted or unsubstituted C 1 -C 8 alkyl or

a substituent of the substituted C 1 -C 8 alkyl is —OH, C 1 -C 8 alkoxy, C 3 -C 8 cycloalkyl,

R 18 is —OH; R 19 is C 1 -C 8 alkyl; and b=0-5.

18. The 2,4-disubstituted pyrimidine derivative according to claim 9 , the structural formula of which is as shown in Formula V:

wherein, R 12 is —H, C 1 -C 10 alkyl or hydroxyl-substituted C 1 -C 10 alkyl.

19. The 2,4-disubstituted pyrimidine derivative according to claim 18 , wherein R 12 is —H, C 1 -C 8 alkyl or hydroxyl-substituted C 1 -C 8 alkyl.

20. A 2,4-disubstituted pyrimidine derivative, the structural formula of which is as shown below:

21. A pharmaceutically acceptable salt of the 2,4-disubstituted pyrimidine derivative according to claim 1 , wherein said pharmaceutically acceptable salt further comprises at least one of p-toluene sulfonate, oxalate, citrate, malate, salicylate, tartrate, phosphate, methanesulfonate, sulfate, fumarate, hydrochloride and maleate.

22. A pharmaceutically acceptable hydrate of the 2,4-disubstituted pyrimidine derivative according to claim 1 .

23. A pharmaceutical composition comprising: the 2,4-disubstituted pyrimidine derivative according to claim 1 , a salt of the 2,4-disubstituted pyrimidine derivative or a hydrate of the 2,4-disubstituted pyrimidine derivative; and a pharmaceutically acceptable auxiliary ingredient.

24. A method of inhibiting JAK2 comprising administering the pharmaceutical composition according to claim 23 to a subject in need of JAK2 inhibition.

25. A method of inhibiting FLT3 comprising administering the pharmaceutical composition according to claim 23 to a subject in need of FLT3 inhibition.

26. A method of treating a tumor comprising administering to a subject the pharmaceutical composition according to claim 23 , wherein the tumor is a hematological tumor, and the subject suffers from acute myeloid leukemia, myelodysplastic disorder, or myelofibrosis.

27. A method for treating essential thrombocythemia comprising administering to a subject the pharmaceutical composition according to claim 23 .

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 27, 2021
From: CHEN, LIJUAN
To: CHENGDU ZENITAR BIOMEDICAL TECHNOLOGY CO., LTD.
Reel/Frame 058592/0644 →
Priority Claims (1)
CN 201910577919.X · Jun 28, 2019 · national
Continuity (1)
Related Publication 20220298140A1 · Sep 22, 2022
References Cited (19)
US 7691855B2 · Furet et al. · 2010 [cited by applicant]
US 8309718B2 · Li et al. · 2012 [cited by applicant]
US 8859574B2 · Marsilje et al. · 2014 [cited by applicant]
US 20090215805A1 · Wood et al. · 2009 [cited by applicant]
CN 1668610A · 2005 [cited by applicant]
CN 101325953A · 2008 [cited by applicant]
CN 101910152A · 2010 [cited by applicant]
CN 102112467A · 2011 [cited by applicant]
WO 02092573A2 · 2002 [cited by applicant]
WO WO2004005282A1 · 2004 [cited by examiner]
WO 2018183923A1 · 2018 [cited by applicant]
WO 2018195450A1 · 2018 [cited by applicant]
WO 2019079607A1 · 2019 [cited by applicant]
Boluda, Juan Carlos HernÃindez, Montse GÃ [cited by examiner]
“Pacritinib (SB1518), a JAK2/FLT3 inhibitor for the treatment of acute myeloid leukemia.” Blood cancer journal 1.11 (2011): e44-e44. (Year: 2011). [cited by examiner]
American Cancer Society. “Acute Myeloid Leukemia Causes, Risk Factors, and Prevention”. https://www.cancer.org/content/dam/CRC/PDF/Public/8675.00.pdf. Accessed Apr. 30, 2025 (Year: 2025). [cited by examiner]
Cho, Young Shin, et al. “4-(Pyrazol-4-yl)-pyrimidines as selective inhibitors of cyclin-dependent kinase 4/6.” Journal of medicinal chemistry 53.22 (2010): 7938-7957. (Year: 2010). [cited by examiner]
Cho et al. (2010). 4-(Pyrazol-4-yl)-pyrimidines as selective inhibitors of cyclin-dependent kinase 4/6. Journal of Medicinal Chemistry, 53(22), 7938-7957. [cited by applicant]
International Search Report for PCT/CN2020/098523 (Sep. 30, 2020). [cited by applicant]